CLARKSVILLE, Mo. —
"If it gets another foot (higher), it's going to become another issue," Thompson said. Townsfolk "are kinda watching and holding their breath. ... Some things are going to really be close to the wire."
Elsewhere, smaller rivers caused big problems. In Grand Rapids, Mich., the Grand River hit a record 21.85 feet, driving hundreds of people from their homes and flooding parts of downtown.
Spots south of St. Louis aren't expected to crest until late this week, and significant flooding is possible in places like Ste. Genevieve, Mo., Cape Girardeau, Mo., and Cairo, Ill. Further downriver, flood warnings have been issued for Kentucky and Tennessee.